| 从Pb-Pt-Pd合金中真空蒸馏分离Pb |
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| 引用本文： | 杨春玉,丘克强,林德强.从Pb-Pt-Pd合金中真空蒸馏分离Pb[J].中南大学学报(自然科学版),2011(9). |
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| 作者姓名： | 杨春玉 丘克强 林德强 |
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| 作者单位： | 中南大学化学化工学院; |
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| 基金项目： | 国家高技术研究发展计划(“863”计划)项目(2006AA06Z375) |
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| 摘 要： | 采用真空蒸馏方法分离Pb-Pt-Pd合金,考察温度、蒸馏时间、真空度对真空蒸馏分离效果的影响。研究结果表明:含Pt和Pd分别为5%的Pb-Pt-Pd合金在1 250 K和30 Pa条件下进行1次蒸馏,当蒸馏时间延长至2 h后Pb脱除率接近于92.6%,1次蒸余物中的Pt和Pd含量保持在60%左右。将1次蒸余物在1 523 K和30 Pa条件下进行2次及3次蒸馏,所得2次及3次蒸余物中Pt和Pd质量分数分别为67.23%和68.98%。
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| 关 键 词： | Pb-Pt-Pd合金 真空蒸馏 分离 |
Removal of lead from Pb-Pt-Pd alloy by vacuum distillation |
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| YANG Chun-yu,QIU Ke-qiang,LIN De-qiang.Removal of lead from Pb-Pt-Pd alloy by vacuum distillation[J].Journal of Central South University:Science and Technology,2011(9). |
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| Authors: | YANG Chun-yu QIU Ke-qiang LIN De-qiang |
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| Institution: | YANG Chun-yu,QIU Ke-qiang,LIN De-qiang (School of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | Vacuum distillation for separation of Pb from Pb-Pt-Pd alloy was investigated.The effects of temperature,distillation time and pressure on the vacuum separation were studied.The primary distillation results show that the removal rate of Pb is close to 92.6%,and Pt and Pd content in primary distillation residue remained around 60% when the Pb-Pt-Pd alloy containing 5% Pt and 5% Pd is distillated for more than 2 h at 1 250 K and 30 Pa.After secondary distillation and third distillation under the same conditio... |
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| Keywords: | Pb-Pt-Pd alloy vacuum distillation separation |
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